Current result ^^
Looks good, especially the silver font. I think the green "2" is a little bit too shiny and colorized. Or the gear's blue is too weak. Maybe, the logo looks even cleaner in the end without the "2"...
I agree that the current SFML Theme is very colorful and highsaturated, but in my opinion less is more when it comes to design. Less saturation, but still noticable colour tends to give more visual appeal. At the same time i wanted newcomers to focus on the "2" at first sight, since its a new logo, a new version, and alot more new goodies coming. Hence the highsaturated 2.